CN101580398B - Ladle kerb casting material and ladle kerb preparation method thereof - Google Patents
Ladle kerb casting material and ladle kerb preparation method thereof Download PDFInfo
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- CN101580398B CN101580398B CN2009100652945A CN200910065294A CN101580398B CN 101580398 B CN101580398 B CN 101580398B CN 2009100652945 A CN2009100652945 A CN 2009100652945A CN 200910065294 A CN200910065294 A CN 200910065294A CN 101580398 B CN101580398 B CN 101580398B
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Abstract
The invention relates to ladle kerb casting material and a ladle kerb preparation method by the ladle kerb casting material. The casting material comprises the following components in weight percentage: 60-82% of ladle lining waste having a grain size of 1-8mm, 10-20% of bauxite grain size of 0.044-1mm, 2-10% of silicon dioxide superfine(less than or equal to 0.02mum), 5-10% of magnesium oxide fine powder grain size of 0.044-0.088 and 0.01-1% of sodium polyphosphate. The preparation method comprises ladle kerb lining waste selecting, crushing, mixing evenly and adding water while stirring, casting, maintaining, baking and the like. The waste ladle kerb casting material is recycled by the preparation method so that the production cost of the fireproof materials and the steel-making cost canbe obviously reduced, the economic benefit is improved and the social meaning of protecting environment and saving energy can be realized; the ladle kerb prepared by the ladle kerb casting material h as the advantages of good high-temperature volume stability, enough common/ medium/ high temperature strength, strong anti-slag corrosion and anti erosion-corrosion, thus satisfying the requirements for maintaining the normal running of the ladles.
Description
Technical field
The present invention relates to fire resisting material field, relate in particular to a kind of ladle kerb casting material and utilize this mould material to prepare the method on ladle edge.
Background technology
Along with the development of continuous casting and furnace outer refining technology, the part refining process is transferred to the ladle from steel melting furnace and is carried out.Ladle is not only the elevated temperature vessel that stores molten steel, also will carry out liquid steel refining in a vacuum, becomes characteristic metallurgical equipment.For improving ladle life, reduce refractory consumption, ladle has been to act the leading role to become from setting to unsetting anti-material with anti-material, and to complete unsettingization development.Consider that from aspects such as economic, laborsaving, environment casting and constructing becomes the effective ways of ladle construction, the various advantages of casting and constructing has also promoted the development of steel ladle casting material.China has developed water glass bonded alumina-magnesia castable early 1980s, then developed the alumina-magnesia castable of s-generation dry glass, liquid steel temperature rises and the requirement of continuous casting ladle liner but still can not satisfy, carried out the exploitation of spinel mould material afterwards again, as alumina spinel pouring material, magnesium-aluminium spinel matter mould material, aluminate mould material etc.Application practice for many years shows that the most economical using method of ladle is the service requirements different according to each position, rationally carries out the coupling of material, makes the life-span at each position of ladle synchronous, reduces and repairs number of times.At present " bottleneck " of ladle material lifetime generally is functional materialss such as slag line, bag end impact zone and gas permeable brick, brick cup up and down.Ladle in use, the ladle jar does not generally contact molten steel (slag) along the position, but sometimes because of tap fluctuates, tap for a long time molten steel again directly contact jar along the position.Therefore require the refractory materials at this position to have good medium and high temperature strength, and have certain opposing molten steel, the ability of slag corrosion.
At present, year consumption of China's refractory materials uses back depleted refractory materials more than 4,000,000 t more than 9,000,000 t.These are used as not only enormous amount of rubbish depleted refractory materials, and extremely difficult, have only on a small quantity to be reused, and waste material that major part can't be handled is piled up inside and outside the factory, are to bury or the use of demoting to the exemplary process mode of these waste materials.Not only these increasing waste materials need be piled up with buying or bury in enterprise, increases production cost, and caused the significant wastage and the environmental pollution of available resources, also increased immense pressure to environment protection.The research of utilization again to refractory waste mainly is that it is used as the auxiliary material degradation at present, be incorporated into very little ratio in the products such as refractory product, cement, pottery or glass, and be cost to reduce quality product, therefore cost-effective to utilize research again be a problem demanding prompt solution to refractory waste.
Summary of the invention
It is the ladle kerb casting material that main raw material is made with depleted ladle liner material that the technical problem to be solved in the present invention provides a kind of, ladle edge with this material cast has good medium and high temperature strength, and has certain opposing molten steel, the ability of slag corrosion.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of ladle kerb casting material of using, described mould material contains following material composition:
Raw material granularity distributed weight per-cent
Ladle lining waste material 1～8mm 60～82%
Alumine 0.044～1mm 10～20%
Silicon-dioxide ultrafine powder≤0.02 μ m 2～10%
Magnesium oxide powder 0.044～0.088mm 5～10%
Sodium polyphosphate 0.01～1%
Described mould material contains following material composition:
Raw material granularity distributed weight per-cent
Ladle lining waste material 1～8mm 60～82%
Alumine 0.044～0.2mm 4～8%
Alumine 0.2～1mm 6～12%
Silicon-dioxide ultrafine powder≤0.02 μ m 2～10%
Magnesium oxide powder 0.044～0.088mm 5～10%
Sodium polyphosphate 0.01～1%
Described mould material contains following material composition:
Raw material granularity distributed weight per-cent
Ladle lining waste material 1～8mm 60～70%
Alumine 0.044～0.2mm 6～8%
Alumine 0.2～1mm 9～12%
Silicon-dioxide ultrafine powder≤0.02 μ m 6～10%
Magnesium oxide powder 0.044～0.088mm 7～10%
Sodium polyphosphate 0.1～1%
Described mould material contains following material composition:
Raw material granularity distributed weight per-cent
Ladle lining waste material 1～8mm 70～82%
Alumine 0.044～0.2mm 4～6%
Alumine 0.2～1mm 6～9%
Silicon-dioxide ultrafine powder≤0.02 μ m 2～7%
Magnesium oxide powder 0.044～0.088mm 5～7%
Sodium polyphosphate 0.01～1%
Described ladle lining waste material is a magnalium matter mould material.
Above-mentioned magnalium matter mould material is to be made by following raw material: by weight percentage, the alumine 65～90% of granularity 0.088～8mm, high-purity ρ-alumina powder 1～10%, silicon-dioxide ultrafine powder 1～10%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.01～0.3%, 1～0.044mm magnesium oxide powder 3～15%.
Described sodium polyphosphate is at least a in tripoly phosphate sodium STPP, the Sodium hexametaphosphate 99.
A kind ofly utilize above-mentioned ladle kerb casting material to prepare the method on ladle edge, may further comprise the steps:
1) manually chooses reclaiming ladle lining waste material, reject adherent slag and rotten part;
2) be broken into the particulate material of granularity 1～8mm with the artificial or jaw crusher material piece after selection;
3) by the described mixing ratio of claim 1 ladle is served as a contrast and insert forced mixer after waste material, alumine, silicon-dioxide ultrafine powder, magnesium oxide powder, sodium polyphosphate mix and mix, do earlier and mixed 2～5 minutes, add the water stirring and evenly mixing by 5～8% of total raw material weight again and (under the condition that guarantees the mould material workability, reduce water consumption as far as possible; When amount of water was excessive, heating back moisture evaporation was overflowed, and increase in the space that stays, and short texture causes mould material construction body strength degradation, the wear resistance variation);
4) mould material that stirs is injected ladle along mould, vibration makes mould material evenly fill entire die while feed in raw material, add when being vibrated to no a large amount of bubble discharge behind the material again till;
5) normal temperature leaves standstill the demoulding after 4～8 hours, toast after 24～48 hours.
The present invention has actively useful effect:
1. energy conservation and environmental protection benefit is recycled the pollution to environment that has not only reduced the part trade waste with the back Refractory Carstables for Ladles, help the protection of environment, realize the second stage employ of Energy resources, also can reduce the consumption of alumine mineral, saved mineral wealth;
2. economic benefit is cheap renewable resource with the back Refractory Carstables for Ladles, this type of resource of recycle can significantly reduce refractory materials production cost and steel-making cost, can significantly improve economic benefit of enterprises, use the present invention, 80% recovery that can serve as a contrast the ladle that a ladle produces waste material is used for building by laying bricks or stones of this ladle.
3. the ladle edge that pours into mould material of the present invention not only has the good high-temperature volume stability, and has enough normal, medium and high temperature strength, and anti-slagging of retractory scouring capability is strong, can satisfy the needs that ladle runs well, and the relevant technologies index sees Table 1.
The basic mechanical design feature index of table 1 ladle kerb casting material of the present invention
Embodiment
Embodiment uses the ladle kerb casting material for 1 one kinds, forms (by weight percentage, down together) by following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 70%, 0.044～0.2mm alumine (Al
2O
3〉=70%) 7%, 0.2～1mm alumine 8%, silicon-dioxide ultrafine powder (≤0.02 μ m) 6%, 0.044～0.088mm magnesium oxide powder 8.9%, tripoly phosphate sodium STPP 0.1%.The following raw material of above-mentioned magnalium matter ladle lining waste material reason is made: the alumine 75% of granularity 0.088～8mm, high-purity ρ-alumina powder 7%, silicon-dioxide ultrafine powder 8%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.2%, 1～0.044mm magnesium oxide powder 9.8%.
Utilize above-mentioned ladle kerb casting material to prepare the method on ladle edge, step is as follows:
1) manually chooses reclaiming ladle lining waste material, reject adherent slag and rotten part;
2) be broken into the particulate material of granularity 1～8mm with the artificial or jaw crusher material piece after selection;
3) by the described mixing ratio of claim 1 ladle is served as a contrast and insert forced mixer after waste material, alumine, silicon-dioxide ultrafine powder, magnesium oxide powder, sodium polyphosphate mix and mix, do earlier and mixed 4～5 minutes, add the water stirring and evenly mixing by 6% of total raw material weight again;
4) mould material that stirs is injected ladle along mould, vibration makes mould material evenly fill entire die while feed in raw material, add when being vibrated to no a large amount of bubble discharge behind the material again till;
5) leave standstill the demoulding after 8 hours under the normal temperature, toast after 48 hours (heat-up rate at baking initial stage should be slow, adjusts storing temperature by the coal gas amount and the air capacity of regulating roaster, so that the thermograde that baking is produced is controlled in the reasonable range), its performance index see Table 1, down together.
Embodiment uses the ladle kerb casting material for 2 one kinds, is made up of following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 60%, 0.044～0.2mm alumine 8%, 0.2～1mm alumine 12%, silicon-dioxide ultrafine powder (≤0.02 μ m) 10%, 0.044～0.088mm magnesium oxide powder 9.98%, tripoly phosphate sodium STPP 0.02%.The following raw material of above-mentioned magnalium matter ladle lining waste material reason is made: the alumine 90% of granularity 0.088～8mm, high-purity ρ-alumina powder 3%, silicon-dioxide ultrafine powder 3.9%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.1%, 1～0.044mm magnesium oxide powder 3%.
It is identical with embodiment 1 to utilize above-mentioned ladle kerb casting material to prepare the method on ladle edge.
Embodiment uses the ladle kerb casting material for 3 one kinds, is made up of following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 82%, 0.044～0.2mm alumine 4%, 0.2～1mm alumine 6%, silicon-dioxide ultrafine powder (≤0.02 μ m) 2%, 0.044～0.088mm magnesium oxide powder 5%, hexapolyphosphate sodium 0.5%, tripoly phosphate sodium STPP 0.5%.The following raw material of above-mentioned magnalium matter ladle lining waste material reason is made: the alumine 65% of granularity 0.088～8mm, high-purity ρ-alumina powder 10%, silicon-dioxide ultrafine powder 10%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.3%, 1～0.044mm magnesium oxide powder 14.7%.
The method of utilizing above-mentioned ladle kerb casting material to prepare the ladle edge is substantially the same manner as Example 1.
Embodiment uses the ladle kerb casting material for 4 one kinds, is made up of following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 65%, 0.044～0.2mm alumine 6%, 0.2～1mm alumine 6%, silicon-dioxide ultrafine powder (≤0.02 μ m) 4.95%, 0.044～0.088mm magnesium oxide powder 8%, tripoly phosphate sodium STPP 0.05%.The following raw material of above-mentioned magnalium matter ladle lining waste material reason is made: the alumine 70% of granularity 0.088～8mm, high-purity ρ-alumina powder 9%, silicon-dioxide ultrafine powder 9%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.01%, 1～0.044mm magnesium oxide powder 11.99%.
The method of utilizing above-mentioned ladle kerb casting material to prepare the ladle edge is substantially the same manner as Example 1.
Embodiment uses the ladle kerb casting material for 5 one kinds, is made up of following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 75%, 0.044～0.2mm alumine 4%, 0.2～1mm alumine 6%, silicon-dioxide ultrafine powder (≤0.02 μ m) 9.92%, 0.044～0.088mm magnesium oxide powder 5%, tripoly phosphate sodium STPP 0.08%.The following raw material of above-mentioned magnalium matter ladle lining waste material reason is made: the alumine 80% of granularity 0.088～8mm, high-purity ρ-alumina powder 5%, silicon-dioxide ultrafine powder 2.8%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.2%, 1～0.044mm magnesium oxide powder 12%.
The method of utilizing above-mentioned ladle kerb casting material to prepare the ladle edge is substantially the same manner as Example 1.
Embodiment uses the ladle kerb casting material for 6 one kinds, is made up of following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 80%, 0.044～0.2mm alumine 4%, 0.2～1mm alumine 6%, silicon-dioxide ultrafine powder (≤0.02 μ m) 3.97%, 0.044～0.088mm magnesium oxide powder 6%, tripoly phosphate sodium STPP 0.03%.The following raw material of above-mentioned magnalium matter ladle lining waste material reason is made: the alumine 65～90% of granularity 0.088～8mm, high-purity ρ-alumina powder 1～10%, silicon-dioxide ultrafine powder 1～10%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.01～0.3%, 1～0.044mm magnesium oxide powder 3～15%.
The method of utilizing above-mentioned ladle kerb casting material to prepare the ladle edge is substantially the same manner as Example 1.
Embodiment uses the ladle kerb casting material for 7 one kinds, is made up of following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 62%, 0.044～0.2mm alumine 8%, 0.2～1mm alumine 11%, silicon-dioxide ultrafine powder (≤0.02 μ m) 9%, 0.044～0.088mm magnesium oxide powder 9%, tripoly phosphate sodium STPP 1%.The following raw material of above-mentioned magnalium matter ladle lining waste material reason is made: the alumine 88% of granularity 0.088～8mm, high-purity ρ-alumina powder 2%, silicon-dioxide ultrafine powder 3.8%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.2%, 1～0.044mm magnesium oxide powder 6%.
The method of utilizing above-mentioned ladle kerb casting material to prepare the ladle edge is substantially the same manner as Example 1.
Embodiment uses the ladle kerb casting material for 8 one kinds, is made up of following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 78%, 0.044～0.2mm alumine 5%, 0.2～1mm alumine 7%, silicon-dioxide ultrafine powder (≤0.02 μ m) 3.97%, 0.044～0.088mm magnesium oxide powder 6%, tripoly phosphate sodium STPP 0.03%.The following raw material of above-mentioned magnalium matter ladle lining waste material reason is made: the alumine 78% of granularity 0.088～8mm, high-purity ρ-alumina powder 3%, silicon-dioxide ultrafine powder 7%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.05%, 1～0.044mm magnesium oxide powder 11.95%.
The method of utilizing above-mentioned ladle kerb casting material to prepare the ladle edge is substantially the same manner as Example 1.
Embodiment uses the ladle kerb casting material for 9 one kinds, by following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 68%, 0.044～0.2mm alumine 7%, 0.2～1mm alumine 10%, silicon-dioxide ultrafine powder (≤0.02 μ m) 7.5%, 0.044～0.088mm magnesium oxide powder 7%, tripoly phosphate sodium STPP 0.5%.
The method of utilizing above-mentioned ladle kerb casting material to prepare the ladle edge is substantially the same manner as Example 1.
Embodiment uses the ladle kerb casting material for 10 1 kinds, by following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 72%, 0.044～0.2mm alumine 6%, 0.2～1mm alumine 12%, silicon-dioxide ultrafine powder (≤0.02 μ m) 4%, 0.044～0.088mm magnesium oxide powder 5.96%, tripoly phosphate sodium STPP 0.04%.The following raw material of above-mentioned magnalium matter ladle lining waste material reason is made: the alumine 89% of granularity 0.088～8mm, high-purity ρ-alumina powder 1%, silicon-dioxide ultrafine powder 5.8%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.2%, 1～0.044mm magnesium oxide powder 4%.
The method of utilizing above-mentioned ladle kerb casting material to prepare the ladle edge is substantially the same manner as Example 1.
Embodiment uses the ladle kerb casting material for 11 1 kinds, is made up of following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 66%, 0.044～1mm alumine 14%, silicon-dioxide ultrafine powder (≤0.02 μ m) 9.9%, 0.044～0.088mm magnesium oxide powder 10%, tripoly phosphate sodium STPP 0.1%.The following raw material of above-mentioned magnalium matter ladle lining waste material reason is made: the alumine 67% of granularity 0.088～8mm, high-purity ρ-alumina powder 9%, silicon-dioxide ultrafine powder 8%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.04%, 1～0.044mm magnesium oxide powder 12.96%.
The method of utilizing above-mentioned ladle kerb casting material to prepare the ladle edge is substantially the same manner as Example 1.
Embodiment uses the ladle kerb casting material for 12 1 kinds, is made up of following material composition:
Granularity 1～8mm magnalium matter ladle lining waste material 81%, 0.044～1mm alumine 9%, silicon-dioxide ultrafine powder (≤0.02 μ m) 3.1%, 0.044～0.088mm magnesium oxide powder 6%, tripoly phosphate sodium STPP 0.9%.
The method of utilizing above-mentioned ladle kerb casting material to prepare the ladle edge is substantially the same manner as Example 1.
Claims (6)
1. a ladle kerb casting material is characterized in that, described mould material contains following material composition:
，
Described ladle lining waste material is a magnalium matter mould material, and by weight percentage, it is to be made by following raw material:
The alumine 65～90% of granularity 0.088～8mm, high-purity ρ-alumina powder 1～10%, silicon-dioxide ultrafine powder 1～10%, Sodium hexametaphosphate 99 is or/and Trisodium trimetaphosphate 0.01～0.3%, 1～0.044mm magnesium oxide powder 3～15%.
2. ladle kerb casting material according to claim 1 is characterized in that, described mould material contains following material composition:
3. ladle kerb casting material according to claim 1 is characterized in that, described mould material contains following material composition:
4. ladle kerb casting material according to claim 1 is characterized in that, described mould material contains following material composition:
5. according to the described ladle kerb casting material of any claim of claim 1～4, it is characterized in that described sodium polyphosphate is at least a in tripoly phosphate sodium STPP, the Sodium hexametaphosphate 99.
6. one kind is utilized the described ladle kerb casting material of claim 1 to prepare the method on ladle edge, may further comprise the steps:
1) manually chooses reclaiming ladle lining waste material, reject adherent slag and rotten part;
2) with artificial or jaw crusher the recovery ladle after choosing is served as a contrast the particulate material that waste material is broken into 1～8mm;
3) by the described proportioning raw materials example of claim 1 ladle is served as a contrast and insert forced mixer after waste material, alumine, silicon-dioxide ultrafine powder, magnesium oxide powder, sodium polyphosphate mix and mix, do earlier and mixed 2～5 minutes, add the water stirring and evenly mixing by 5～8% of total raw material weight again;
4) mould material that stirs is injected ladle along mould, vibration makes mould material evenly fill entire die while feed in raw material, add when being vibrated to no a large amount of bubble discharge behind the material again till;
5) normal temperature leaves standstill the demoulding after 4～8 hours, toast after 24～48 hours.
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| CN102351551B (en) * | 2011-07-18 | 2013-02-27 | 无锡市宜宏耐火材料有限公司 | Energy-saving swing-groove for continuous casting tundish and preparation method thereof |
| CN103373855B (en) * | 2012-04-25 | 2015-06-17 | 宝山钢铁股份有限公司 | Regenerative steel ladle repair material |
| CN103130520B (en) * | 2013-03-20 | 2015-02-04 | 武汉钢铁(集团)公司 | Steel ladle edge refractory castable and preparation method thereof |
| CN107140998A (en) * | 2017-06-02 | 2017-09-08 | 湖州知维技术服务有限公司 | Industrial kiln recycling type basket pouring material and its preparation technology |
| CN107140999A (en) * | 2017-06-02 | 2017-09-08 | 湖州知维技术服务有限公司 | A kind of industrial kiln recycling type basket pouring material |
| CN107382333A (en) * | 2017-06-28 | 2017-11-24 | 常州莱尚纺织品有限公司 | A kind of preparation method of anti-slag pouring materialfor steel ladle |
| CN109111235A (en) * | 2018-09-05 | 2019-01-01 | 云南濮耐昆钢高温材料有限公司 | A kind of alumina-spinel castable |
| CN110845248A (en) * | 2019-12-20 | 2020-02-28 | 攀枝花钢城集团有限公司 | Steel-making ladle bottom castable |
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